$$a$)$ The expected$($estimated$)$ time for activity C is

$$

$12$ weeks. $($Round your response to two decimal$$ places.$)$

Part $3$

$$b$)$ The variance for activity C is

$$

$2\mathrm{.}78$ weeks. $($Round your response to two decimal$$ places.$)$

Part $4$

$$c$)$ Based on the calculation of the estimated$$ times, the critical path is

A $-$ B $-$ E $-$ F $-$ H $-$ J $-$ K

$.$

Part $5$

$$d$)$ The estimated time for the critical path is

$$

$44\mathrm{.}34$ weeks. $($Round your response to two decimal$$ places.$)$

Part $6$

$$e$)$ The activity variance along the critical path is

$$

$25\mathrm{.}39$ weeks. $($Round your response to two decimal$$ places.$)$

Part $7$

$$f$)$ Using the standard normal tableLOADING...$,$ the probability that Mbeki Construction will finish the project in $40$ weeks or less is

$$

enter your response here. $($Enter as a probability and round your response to three decimal$$ places.$)$